Non-Destructive Classification of Thai Cha-Nee Durian Maturity With Near-Field Reflection Mode Measurement Using a 3.4-GHz Microwave Sensor

DOI

10.2991/assehr.k.210203.135How to use a DOI?

Keywords

durian maturity, microwave sensor, fruit maturity measurement, reflection mode measurment

Abstract

This paper proposes an investigation of Thai Cha-Nee durian maturity with reflection mode measurement using a simple microwave sensor based planar structure. The microwave sensor was a “Pencil-like shaped probe”, which were made of a FR4 laminate; dielectric constant (εr) = 4.4, dissipation factor (tan δ) = 0.018, substrate thickness (h) = 1.6 mm, and copper thickness (t) = 0.035 mm. The resonant frequency was designed at 3.4 GHz to avoid interferences from wireless communication channels. The distance between sensor and durian was recommended at less than 10 mm, due to near-field region. Referring to experimental results, durian maturity was predicted by reflection coefficient ∣Γ∣; ∣Γ∣immature ≥ 0.53, 0.28 ≤ ∣Γ∣semi-mature ≤ 0.43, ∣Γ∣mature ≤ 0.19, which achieved prediction accuracy at 91.55 – 99.0 %.

Copyright

© 2021, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Pakornkiat Sawetmethikul
AU  - Kittiwan Nimkerdphol
PY  - 2021
DA  - 2021/02/04
TI  - Non-Destructive Classification of Thai Cha-Nee Durian Maturity With Near-Field Reflection Mode Measurement Using a 3.4-GHz Microwave Sensor
BT  - Proceedings of the 6th UPI International Conference on TVET 2020 (TVET 2020)
PB  - Atlantis Press
SP  - 285
EP  - 291
SN  - 2352-5398
UR  - https://doi.org/10.2991/assehr.k.210203.135
DO  - 10.2991/assehr.k.210203.135
ID  - Sawetmethikul2021
ER  -